Orange Vinegar: 1 16-ounce canning jar 2 oranges, peels only (eat the insides!) vinegar to cover Curl the peels around the inside of the jar. I used two large oranges and would not have been able to fit another peel. If your oranges are small and you could fit another peel, feel free to add one more. Pour vinegar into the jar to cover the peels and close tightly. Store in the cupboard for two weeks, then transfer the vinegar to a spray bottle and use for all your cleaning purposes!